[gull]

1) Oakmarks funds are not great investments (in the sense that you can do better). This is because they have relatively high expense ratios, turnover, and cash drag.

2) I know nothing of Citadel, but I would not assume it's +EV.

3) Yes, I would suggest moving your money to Vanguard. Vanguard is a better fund company - it has cheaper funds (which means higher returns) and also more asset allocation choices.